All-solid-state battery control system

Abstract

An all-solid-state battery control system includes an all-solid-state battery, a housing, a fluid, a pressurizer, and a processor. The all-solid-state battery includes a solid electrolyte. The housing has a space containing the all-solid-state battery. The fluid is configured to fill the space of the housing. The pressurizer is configured to apply pressure to the all-solid-state battery via the fluid. The processor is configured to control a magnitude of the pressure to be applied to the all-solid-state battery by the pressurizer, on the basis of a temperature of the all-solid-state battery and a state of charge of the all-solid-state battery.

1 . An all-solid-state battery control system comprising:
 an all-solid-state battery including a solid electrolyte;   a housing having a space containing the all-solid-state battery;   a fluid configured to fill the space of the housing;   a pressurizer configured to apply pressure to the all-solid-state battery via the fluid; and   a processor configured to control a magnitude of the pressure to be applied to the all-solid-state battery by the pressurizer, on a basis of a temperature of the all-solid-state battery and a state of charge of the all-solid-state battery.   
     
     
         2 . The all-solid-state battery control system according to  claim 1 , further comprising a heater configured to heat the fluid. 
     
     
         3 . The all-solid-state battery control system according to  claim 1 , further comprising a chiller configured to cool the fluid. 
     
     
         4 . The all-solid-state battery control system according to  claim 2 , further comprising a chiller configured to cool the fluid. 
     
     
         5 . The all-solid-state battery control system according to  claim 1 , wherein
 the all-solid-state battery includes a stacked structure and a packaging material, the packaging material having flexibility and sealing the stacked structure, and   the stacked structure includes a positive electrode, a negative electrode, and the solid electrolyte sandwiched between the positive electrode and the negative electrode.   
     
     
         6 . The all-solid-state battery control system according to  claim 2 , wherein
 the all-solid-state battery includes a stacked structure and a packaging material, the packaging material having flexibility and sealing the stacked structure, and   the stacked structure includes a positive electrode, a negative electrode, and the solid electrolyte sandwiched between the positive electrode and the negative electrode.   
     
     
         7 . The all-solid-state battery control system according to  claim 1 , wherein the processor is configured to increase the pressure in a continuous or stepwise manner, as the temperature of the all-solid-state battery decreases. 
     
     
         8 . The all-solid-state battery control system according to  claim 2 , wherein the processor is configured to increase the pressure in a continuous or stepwise manner, as the temperature of the all-solid-state battery decreases. 
     
     
         9 . The all-solid-state battery control system according to  claim 1 , wherein the processor is configured to increase the pressure in a continuous or stepwise manner, as the state of charge of the all-solid-state battery decreases. 
     
     
         10 . The all-solid-state battery control system according to  claim 2 , wherein the processor is configured to increase the pressure in a continuous or stepwise manner, as the state of charge of the all-solid-state battery decreases. 
     
     
         11 . The all-solid-state battery control system according to  claim 1 , wherein the processor is configured to perform pre-pressurization of preliminarily increasing the pressure, in a case where heavy-load discharge of the all-solid-state battery is predicted on a basis of external information. 
     
     
         12 . The all-solid-state battery control system according to  claim 2 , wherein the processor is configured to perform pre-pressurization of preliminarily increasing the pressure, in a case where heavy-load discharge of the all-solid-state battery is predicted on a basis of external information. 
     
     
         13 . The all-solid-state battery control system according to  claim 1 , wherein the processor is configured to perform pre-pressurization of preliminarily increasing the pressure, in a case where the all-solid-state battery is predicted to switch from a charging state to a discharging state on a basis of external information. 
     
     
         14 . The all-solid-state battery control system according to  claim 2 , wherein the processor is configured to perform pre-pressurization of preliminarily increasing the pressure, in a case where the all-solid-state battery is predicted to switch from a charging state to a discharging state on a basis of external information. 
     
     
         15 . The all-solid-state battery control system according to  claim 1 , wherein the processor is configured to apply additional pressure to the all-solid-state battery in accordance with a degree of deterioration of the solid electrolyte. 
     
     
         16 . The all-solid-state battery control system according to  claim 2 , wherein the processor is configured to apply additional pressure to the all-solid-state battery in accordance with a degree of deterioration of the solid electrolyte. 
     
     
         17 . The all-solid-state battery control system according to  claim 15 , wherein the processor is configured to determine the degree of deterioration of the solid electrolyte, on a basis of accumulated operating time of the all-solid-state battery or degree-of-deterioration estimation data. 
     
     
         18 . The all-solid-state battery control system according to  claim 16 , wherein the processor is configured to determine the degree of deterioration of the solid electrolyte, on a basis of accumulated operating time of the all-solid-state battery or degree-of-deterioration estimation data. 
     
     
         19 . The all-solid-state battery control system according to  claim 1 , wherein the processor is configured to control the magnitude of the pressure to be applied to the all-solid-state battery, on a basis of an internal resistance value of the all-solid-state battery. 
     
     
         20 . The all-solid-state battery control system according to  claim 2 , wherein the processor is configured to control the magnitude of the pressure to be applied to the all-solid-state battery, on a basis of an internal resistance value of the all-solid-state battery.